Unless im reading your question wrong, the answer is....
Country missions and Ziraat missions are completely seperate (other than the fact you need to beat Shadow Lord to start Ziraat missions).
After beating Shadow Lord you are now ready to accept San, Bas, or Win M13 and Ziraat M1. You can do these 2 sets of missions concurrently now.
So, both the main page and post are correct....just 2 different sets of missions
-daigoro